Icon for a portion of a display screen



The FIGURE is a front view of an icon for a portion of a display screen showing my new design.

The broken line drawings of the rectangles within the claimed design and the areas within those rectangles are for illustrative purposes only and form no part of the claimed design. The broken line drawing of a portion of a display screen is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an icon for a portion of a display screen, as shown and described. 